Hi Michael

Flink *does* detect backpressure but currently, it only propagates it back
to sources.
And so it doesn't support auto-scaling.

Regards,
Roman


Nguyen, Michael wrote
> How does Flink handle backpressure (caused by an increase in traffic) in a
> Flink job when it’s being hosted in an EMR cluster? Does Flink detect the
> backpressure and auto-scales the EMR cluster to handle the workload to
> relieve the backpressure? Once the backpressure is gone, then the EMR
> cluster would scale back down?





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